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4. Main Points of Food Packaging Machinery Automation Design 
4.1 Control Method Design 
The process from food production to packaging mainly includes open-loop control, closed-loop 
control and semi-closed-loop control. When choosing the control method of food packaging machinery, 
we need to accurately understand these three control methods: First, open-loop control is generally 
applicable to food processing processes where quality and packaging requirements are not high. The 
application cost of this control method is relatively low, but its reliability is relatively high. Secondly, 
the closed-loop control method is mainly used in sensors in food packaging machinery, which can 
accurately detect the working state of food packaging equipment. This will help to grasp the various 
information detected in time. Under normal circumstances, in the case of higher requirements for 
product packaging quality, choose to use this control method. Finally, the semi-closed loop control 
method can use a sensor on the food packaging machine to detect the state of the device. If the quality 
requirements of food packaging are relatively high, you need to choose a semi-closed loop control 
method. The application cost of this control method is relatively high. 
4.2 Controller Selection 
The controller on food packaging machinery is an important device to improve the efficiency of 

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AEECE 2020
IOP Conf. Series: Earth and Environmental Science 546 (2020) 052067
IOP Publishing
doi:10.1088/1755-1315/546/5/052067
3
automatic control of mechanical equipment. When designing the controller of food packaging 
machinery, the following requirements need to be considered: First, the electrical circuit of the 
controller must be simplified, because this can improve the operability of the automatic control of food 
packaging machinery. Second, when designing the controller, use a programmable controller as much 
as possible. Because the logic function of the programming controller is relatively powerful, it can 
effectively control the operation of the food packaging machinery and improve the flexibility of the 
food packaging machinery. And it is helpful to improve the automation of mechanical equipment 
during operation, and it is convenient for workers to operate. Third, we need to use the computer to 
control the controller. The use of computer programs has a positive significance for achieving the 
purpose of automatic control, and can greatly improve the automation level of food packaging 
machinery and equipment. 
4.3 Drive Technology Design 
In the process of designing food packaging machinery, there are many complicated procedures, and it 
is necessary to ensure that all actions in the equipment are consistent. Traditional food packaging 
machinery will use a host to use complex processes to complete each packaging action. However, this 
may lead to an increase in the incidence of failures and increase the difficulty of equipment 
maintenance. Therefore, we need to use advanced food packaging drive technology to improve the 
automation level of food packaging machinery and simplify the operation steps during the operation of 
equipment. Servo drive technology is the main drive technology used in food packaging machinery 
automation design, which can simplify the mechanical transmission of the entire equipment and 
improve the reliability and stability of the equipment operation. For example, the application of 
three-axis linkage or multi-axis linkage servo drive technology in food packaging machinery can not 
only simplify the mechanical transmission mechanism, but also improve the stability of equipment 
operation and prevent serious failures during operation from affecting the packaging efficiency [3]. 
4.4 Sensor Design 
When the food packaging machinery is designed for automation, we must install multiple sensors on 
the food packaging machinery so that the food packaging machinery can be automated. For example, 
when packaging and cleaning beverages, multiple sensors are required. Under normal circumstances, 
we will choose pressure sensors, photoelectric sensors, etc. to achieve the purpose of mechanical 
automation.